When a political party comes to power, its leaders tend to place many of their faithful followers into important public offices. The use of public offices as rewards for political party work is known as the "Spoils System." The system is popular in numerous nations.
The size of the Atlantic slave trade dramatically transformed African societies. The slave trade brought about a negative impact on African societies and led to the long-term impoverishment of West Africa
A, all the other answers would not make sense in the question.